<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>state</title>
</head>

<body>
    <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://cdn.bootcdn.net/ajax/libs/babel-core/6.1.9/browser.js"></script>
    <script type="text/babel">
        class Weather extends React.Component{
            render(){

            }
        }

    </script>
</body>

</html>